Machine for operating upon shoes



Feb. 4, MME. F. v. HART 'E1- AL 2,230,244-

MACHINE FOR OPERATING UPON SHOES Feb. 4, 1941. F. v. HART Erm.

I MACHINE FOR OPERATING UPON SHOES 9 Sheets-Sheet 2 m 3 3 wahl/fm, ww/MMm9 S y 27%/ j @mp0. 5.

Feb. 4, 1941. F. v. HART E-rAL l 2,230,244

MACHINE FOR OPERATING UPON SHOES Filed July. 28, i939 9 sheets-sheet 3'ag A Tig". 3.

Feb.' 4, 1941. F. v. HART ETAL MACHINE FOR OPERATING UPON SHOES FiledJuly `223, 1959 9 Sheets-Sheet 4 F. 'V. HART ETAL 9 Sheets-Sheet 5 FiledJuly 28 Feb. 4, 1941.,v

` MACHINE FOR OPERATING UPON SHOES Feb. 4, 1941.I F. v HARTA ET AL,2,230,244

I MACHINE FOR OPERATING UPON SHOES Filed July 28, 19159 9 Sheets-Sheet 6292, f 46 0764 ,88 es@ 02841! O 274 428W @f 8 2821 298 vm/URS Feb. 4,1941. i F. v.'HART Erm.

MACHINE FOR OPERATING UPON SHOES Filed July 28, 1939 s sheets-sheet v vl/l",

/NVf/VTRS Feb. 4, 1941. F. v. HART ETAL 2,230,244

MACHINE Foa OPERATING Upon snons Fi1ed Ju1y 2e, 1959 9 sheets-sheet 8/mfms v Feb. 4, 1941.. F. v. HART ETAL MACHINE FON OPERATING uPoN saons1939 49 Sheets-Sheet 9 Filed July 28 Patented Feb. 4, 1941 .UNITEDsTATi-:sw'

o 2,230.34' MACHINE vron OPERATING UPON vsiiolss Fred'v. Hart, Lynn, andJohn J. Austin, Beverly, Mass., assignors to United Shoe MachineryCorporation, Borough of Flemington, N. J., a corporation of New JerseyApplication July 28, 1939, Serial No. 287,082

99 Claims'. (Cl. 12-34) This invention relates to machines for operatingupon shoes, and more particularly to machines for Ashaping or levelingthe bottoms of shoes. The invention is herein illustrated with' sreference to that type of machine having aoleveling tool, such as aspring-pressed roll, and a shoe support mounted for swinging movementsin directions lengthwise of a. shoe thereon to cause the leveling toolto operate progressively along thel shoe bottom, and in which themovements of the shoe support are eiected by power-operated meanscontinuously under the control of the operator. It .will be understood,however, that the invention in some of its aspects is not limited tomachines of the particular type illustrated.

An object of the invention is to provide in a machine of theabove-mentioned type improved means for controlling its power Operation,of such n character as to aord the operator substantially as fullcontrol of the oper-ation of the ,machine `as if he were operating itmanually. For the purpose in view, the controlling means, as hereinillustrated, comprises a manually-Operated member movable to sta-rt thepower-operated ineans in operation and adapted to be moved continuouslyduring the operation of the power-operated means, and automatic meanscooperating with the manually-operated member to cause thepower-operated means to come to a stop when the movement ofthemanually-operated member is stopped.` In the illustratedconstruction, the manually-operated member comprises a hand lever whichis movable in either a rearward or a forward direction to cause rearwardor forward swinging movement of th shoe support, and which may beutilizedto determine by the speed of its movement in either directionthe speed of movement of the shoe support. Thus, the,l operator isenabled at will to start, stop or reverse the direction of swingingmovement of the shoe support and to determine variably by the extent ofthe movement of-the hand lever in either dif rectlon the extent ofrearward or forward swinglng movement ofthe support. Conveniently and inaccordance with still further features of the invention similarpower-operated means is pro# vided 'forifhparting to the leveling tooltipping movements laterally of the shoe about an axis extendinglengthwise of the shoe` and controlling means'enabling the Operator atwill to start, stop, or reverse the tipping movement of-the levelingtool.l This controlling means comprises a. soondf hand lever which, bythe extent of itsmovements in rearward and forward directions.determines variably the extent of tipping movements imparted to theleveling tool in Opposite directions and which may be utilized to,determine by the speed of its movement the speed of tipping movement ofthe leveling tool. By manipulation 'of 5 both these hand levers, whichfor zonvenience are mounted one at each side of the machine, the

operator has as eiective control of the movements of the shoe supportand leveling tool as if he were operating them manually but without thelabor .thatwould be required if one or both of these instrumentalitieswere operated Ymanually. The invention in its illustratedembodiment-provides huid-pressurel means for imparting to the shoesupport vand leveling tool the above-mentioned movements, but it will berecognized that it is not thus limited, since otherv means may beutilized for the accomplishment of-the objects in view.

As a further feature, the invention provides .novel mechanism forautomatically imparting to the leveling tool in predetermined timerelation to the relative movement of the shoe support and leveling toola 'movement heightwise of the shoe into a position higher than itoccupies in operating on the shoe and then a movement do'wnwardly intoinitialengagement with the bottom face of the toe end of the' sole,l andafter the completion of the leveling operation a movement into 3oitselevated position when it is in the same relation to the toe end of thesole.v There is accordingly no danger of excessive bending of themarvgin of the sole by pressure of the leveling tool thereon. Theconstruction herein shown comprises a duid-operated piston movable bypressure of 'fluid against it to lift theleveling tool -against theresistance of spring means tending normally to press the tool down onthe bottom of the shoe, and novel controlling mechanism for releasingthe Itool to the action of the spring means only'after the toe end oftheshoe has been caried to a position under the tool in the first actionof spring means, such as might tend to cause Vthetool to impart a hammerblow to the bottom of the shoe, the illustratedmachine is furtherprovided with a fluid check .for retarding the movementy of the tooltoward the shoe.

The illustrated machine is' furtherl provided u with means whereby thelevelingtool may be controlled by the .operator in such manner as toapply the leveling pressure selectively to one or more portions of theshoe bottom without necessarily applying pressure to other portions.

As herein shown, there is provided a valve for controlling the ow ofpressure fluid to and from .the above-mentioned huid-operated piston, amember movable in one direction in response to rearward movement of theshoe support to move the valve into position to disconnect the 'sourceof pressurefiuid from the piston and to permit the spring means to pressthe tool initially down on the shoe, and Imovable in the oppositedirection in response to forward movement of the shoe support to movethe valve. into position to cause the tool to be lifted by the action ofthe pressure iluid on the piston, after the leveling operation, and'manually-operated means for controlling the movements of this memberindependently of the shoe support to permit the operator at will tocontrol-the valve in the course of the leveling operation. Theconstruction is .further such that the operator may control this valvein such manner as to cause a pluralityof hammer blows to be imparted toone or -moreportions of the shoe bottom by the leveling tool `to assistin properly leveling such portions.

In machines of the type hereinv shown, the shoe support is adjustable toaccommodate shoes of different sizes and to position the ends of thetoes of the diierent shoes in substantially thesame location; and, inaccordance with a further feature of the invention, automatic means isprovided for. variably limiting the rearward movement of the shoesupport in accordance with variations in the lengths of shoes ofdifferent sizes, so thatthe leveling tool will operate on the bottomfaceof each shoe only substantially as farheelwardly as the junction of itsshank and heel endportions,l this means being adjustable to vary theextent of rearward movement of the shoe support.I Inaccordance withstill another feature of the invention, there is provided novel meansfor limiting the forward swinging movementv of the shoe support to cause.it to stop when the leveling tool is in engagement :with the bottomface of the toe .end of the' sole of the shoe,` thus permitting thisportion of the sole to be properly leveled by tipping the tool.

Various novel features of the invention are fur...

ther to be recognized in means for increasing the pressure of theoperating fluid as the work support is moved to present the work inposivalve controlling means to increase the :pressure of the operating'fluid at a predetermined time in the movement of the work support priorto the engagement ci the tool with'the work.

The above and other features of the invention, including variousnoveldetails'of construction and combinations of parts, will now beindre particularly described by reference to the accompanying drawings'and pointed out in the claims.

In the drawings: Fig. 1 a view in right-hand side' elevation to' themargins of the sole.

of a machine in .which the invention is embodied,

parts oi! the structure being broken away and other parts being shown insection;

Fig. 2 is a view in front elevation of the machine shown in Fig. 1 withthe shoe-supporting means removed;

Fig. 3 is an enlarged view, partly in right-hand side elevation andpartly in section, showing the fluid-pressure means for imparting tothe, leveling tool its tipping movements with its controlling valvemechanism and operating connections;

Fig. 4 is an enlarged view, partly in right-hand side elevation andpartly in section, showing a valve for controlling the pressure of theoperating uid and connections-therefrom to the pump and a portion of thevmechanism for operating the pressure control valve, and also a valvefor controlling the ilow of pressure fluid to the mechanism for liftingthe leveling tool; V

Fig..5 is a-detail view looking in the direction of the arrow 5 in Fig.4;

Fig. 6 is a section on the line VI-VI of Fig. 4;

Fig. 7. isa detail sectional view o1' a fluid check hereinafterdescribed;

Fig. 8 is a section on the line VIlI-VIII of Fig. 4;

Fig. 9 is an enlarged view, partly in righthand side elevation andpartly in section, showing the uidpressure means for imparting to theshoe support its swinging` movements with its controlling valve`mechanism and connections for opexlating the valve manually and alsoautomatlcally;

Fig. 10 is a view on an enlarged scale of tion of the mechanism shown inFig. 9;

Fig. 11 is a detail view in front elevation illustrating the relativeVpositions of certain parts shown in Fig. 10;

Fig. l2 is an enlarged detail view in side elevation of the hand leverand associated parts for controlling the tipping movement of theleveling tool;

Fig'. 13 is an enlarged detail view in side elevation showing themeansfor locating the toe and heel posts of the shoe support in adjustedrela- Fig. 14 is a view in side elevation of a portion of -the mechanismfor operating the additional support for the shoe between its toe andheel Fig. 15. is a view, partly in side elevation and A partly insection, of the valve mechanism shown in Fig. 9; and

Fig. 16 is a vertical sectional view on an enlarged `scale ofthe-pressure controlling .valve mechanism shown in Fig. 4.

The main frame 2li of the `illustrated machine has pivotally connectedthereto a shoe support or jack 22 to which swinging movements areimparted by power-operated means under control of the operator,hereinafter described, to carry loperated means also under control ofthe operator to cause the leveling pressure to be applied The jack 22is, in many respects, similar to the disclosure of Letters PatentNo.'1,93 5,625, granted on November 2l, 1933, upon an application 'ofAndrew Eppler, and comprises a toe post 26 fast ona short transverselyextending rock-shaft 28 mounted in suitable bearings inthe frame 20 anda heel post 3B loosely mounted on the shaft 28'. The toe and heel postsare provided with means for supporting the shoe and last iorthe levelingoperation opening formed in a-plate 36 also carried by the' heel post30, which plate is -free to tip about an axis extending laterally of theshoe izo-adjust itself to the top face o! the cone o f the last. Thisplate and the toe support 32 are constructedv substantially as'disclosed in Letters Patent No. 1,962,141, grantedJune l2, 1934, uponan application of Andrew-Eppler and, accordingly, are not describedherein in detail. The spindle 3l is carried by a block 38 which ispivoted at 40 to the top of the heel posttol swing in directions.

lengthwise of the shoe. The block 38 is connected by a link 42 tomechanism which will presently be described whereby theblock and spindlemay be swung to press the toe end of the shoe rmly down upon the toesupport 32.

Formed in the o'pposite side faoes of the toe post 26 arelcurved slots44 concentric with the axis of the shaft 28 and slidably mounted in theslots d@ are blocks B6 (Figs. 9 and l0) which are pivotally connected at08 two arms of a biiurcated lever 50 for tipping the spindle 34|. 'I'helever 50 is arranged Yto be locked to a toothed segment 52 on .the heelpost by a spring-pressed latch pin v (not herein shown) which may bewithdrawn to unlock the lever by means of a finger latch 5d. At itsupper end the segment 52 is provided with a slot 56 to retain the lever50 in an elevated position during the mounting of a last and shoe on thejack. In theA illustrated construction the heel post is freely movableby the operator toward and from the toe post'to adjust the jack toaccommodate shoes of different lengths and to position the ends of thetoes of'shoes of ldifferent lengths in substantially the same location.For locmng the toe and'heel posts together in adjusted relation there ispivotally connected at 5l to the toe post (Fig. 13) an arm 58 to whichthere is secured a toothed segment 60 the teeth 62 of which are'arranged to engage teeth 65 formed-on a ratchet plate 66 which issecured to a second plate 68 pivotally connected at 10 to the heel post80 and carrying a pin 12 which is arranged to' extend into a slot 'M inthe-heel post tolimit swinging movement of the ratchet plate 66; Securedto the toothed segment 60 by screws 'i6 is a laterally extending curvedplate 'I8 and carried by the lever 50 is a pin 80 which is arrangedby'engagementwith the plate 18 to hold the segment 60` out of engagementwith the ratchet plate 66 when the lever 50 is in elevated position.vConnected at one end to the arm v58 and at the other end to the Atoepost 80 is abaiance spring 02 which tends'to hold the heel post in anyposition into which it Ahas been moved by theoperator, against movementaway from The illustrated machine may also be provided with a saddle(not herein shown) for use in .icking the Ishoe alternatively with thespindle tipping mechanism referred to above. The'saddle may be'substantially like' that shown 1x1-Letters' ,Patent No; 1,263,361,granted on-April 23, 1918,

upon an'application of W. C. Baxter, each am "olf, the bifurcatedlever50 being provided with an opening 04 to receive the saddle connections.`It willbe understood that when a saddle'is used .tipping mechanism thesegment 60 is swung central recess in the boss ||0 and surrounds a thelever 501s swung downwardly from elevated position to pull the saddletightly over the shoe and is then. locked to the segment 52, the spring82 acting on the arm 58 to move the segment 60 into engagement with theratchet plate 66 to 5 (Fig. 1o) formed 1n a mmmar loo pivoted to thelower end of the link '42. Pivotally connected to the member |00 is amember |02 which may be swung upinto position to serve as van abutmentfor the horizontal pin 06. When the member |02 is in this positiondownward movement of the lever 5,0 forces the link 42 downwardly tooperate the spindle A34 by engagement of the 'pin 96 with themember |02.The member '|02 is held in its uppermost position by a spring-pressedpin |06 in the member |00 which enters a hole in the' member. vIt, willbe understood that as the lever 50. is'swung downwardly to operateA thespindle downwardly into engagement with the ratchet plate 66 to lock thetoe and heel posts in adjusted relation. If the machine is provided witha saddle the member |02 is swung downwardly into a position in which itwill not obstruct free movement of the pin 96 in the slot 98 so that nomotion is imparted to the link 42 as the lever 52 is 'swung'downwardlyin operating the saddle. The

mechanism for thus rendering the lever 50 effective to operate either asaddle or the link 62 is 0 11, 1938, upon an'application of AndrewEppler 50 and J. P. Fredericksen, comprises a support for the shoebetween the heel end and forepart. This support comprises a rubber pad|05 (Fig. 14) hollowed out to receive the wedge-shaped instepl portionof the last ory shoe and a holder 5 |06 onwhich the pad is supported.The holder |06 is connected to a slide |08 for limiting swing- Aingmovement about an axis extending laterally of the shoe to permit the pad|05 to adjust itsel! to each shoe. The slide |08 -js mounted formovements in directions heightwise of the shoe in aboss |10 on thetoepost 26 and is upheld with the pad |06 in positionto be engaged bythe shoe by a spring which is mounted in a downwardly extending rod H2fast to the slide between a shoulder on the slide and a plate IM machineis further provided i5 I Ill more rmly against' the last or shoe inresponse to rearward movement of the jack 22 to carry the toe end of thev:as

shoe under the leveling roll 24 there is provided a shaft |22 which, asshown more fully in the above-mentioned Letters Patent No. 2,104,739, isgeared to the slide|08 and is rotatably mounted in a bushing |24 in alaterally extending projection |26 on the toe post 26. Keyed to\ one end portion of the shaft |22 is a wheel |28 surrounded by a sleeve |30which is adjustable about' the axis of the shaft |22 upon an enlargedend portion of the projection |26. Formed on the wheel |28 are ratchetteeth |32 and fulcrumed on the sleeve |30 is an arm |34., in which thereis slidably mounted a pawlf|36 which is urged by a spring |38 in adirection to engage one of the ratchet teeth |32Jv'vhen permitted to doso by the sleeve |30 which only partially surrounds thev ratchet teeth'and acts when the parts are in their initial positions as a shield tohold' the pawl |36'out of engagement with the ratchet teeth |32'. In theillustratedl construction the arm |34 which is similar to the arm 88 inthe Letters Patent No. 2,104,739 referred to above carries a pin |40which is held in engagement with the slotted end of a link |42 by aspring |44 connected at one end to a 'pin |45 carried by a projection14,1 formed on the arm |34 and at the l other endto a pin |46 projectingfrom a depending arm |48 on the projection. |26.

At its opposite end the link |42 is pivotally connected to the upper endof a lever |50 (Fig. 1) pivotally connected at |52 to an arm' |54 whichsurrounds the shaft 28 and is secured to the toe post 26 by a bolt |561,Projecting from the arm |54 is a pin |58 and extending between this pinand a rearward projection on the lever |50 is a spring |62` which tendsto swingthe lever in a direction to hold a roll |64 carried by the leverin engagement with au inclinedsurface |66 formed on a guard member |68secured to the frame 20 of the machine. As the jack 22 is swimg aboutthe axis of the shaft 28 in a direction to carry the toe end of the shoeunder the leveling roll, the lever. |50 and through the link |42.the arm|34 are swung. in a direction to releasev the` pawl |36 to the action ofits spring |38 which movesthepawl into 'engagement with the ratchetteeth |32, -thereby locking the arm |34 to the wheel -thatsubstantially. at the time when. the toe end of the shoe is moved underthe leveling roll 24 the roll |64 carriedby the lever |50'is moveddownwardly out of engagement with the inclined face |66 on the guardmember |68. Pivotally connected at |18 to the toe post 26 is a latch |12which is normally held by a spring |14 with its upper end in engagementwith a roll |16 on the guard member |68. Asthe jack is moved rearwardlyfrom its initial position the spring |14 acts to swing the latchrelatively to the toe post 26 and the lever |50 into position to engagea pin |18 jecting from the lever |50, the construction being such thatthe latch |12 is moved into positionA to engage the pin substantially atthe time Ywhen the roll. |84 is moved out of engagement with theinclined surface |66. It will be lmderstood that as the jack 22 istliereii't'err `with-the ratchet teeth |32; At the end of the levelingoperation, as the jack is moved forward- 1y to its initial position tocarry the toe end of 5 the shoe out from under the leveling roll,.theroll' |18 engages the latch |12, after which the pin |18 is moved out ofengagement with the latch. This causes the -lever |50 Ito bereleased tothe action of its spring |62 and the arm |34 10 to be released to theaction of its spring |44 which swings the arm in a direction to causethe sleeve |30 to cam the pawl |36 out of engagement with the ratchetteeth |32 to unlock the slide |08.

In the illustrated machine (the rearward and l5 forwardswingingmovements of the jack 22 about the shaft 28 and the tipping movements ofthe roll 24 laterally of the shoe are eected by power through the actionof fluid pressure means. For imparting to the Jack its swingingmovements 20 there is provid a uid operated .member (Fig. 9) on whi areformed rack teeth |82 engaged by the teeth'ofa pinion |84 fast on a.transversely extending shaft 88 mounted in suitable bearings in abracket |81 which is supported 25 by a transversely extending shaft |88supported -in bearings 1n the frame u and by substantiauy V-shapedcross-bar |8| secured to the frame by screws |33. The teeth of thepinion |84 engage also segmental teeth |88 formed'on the arm |54 30 der|96,at,its upper end isa pipe` 200 through lo which the pressure fluidmay be admitted to the cylinder |88 to move the piston |82 and themember |88 downwardly to impart forward Aswinging movement to the jack,the pipes |08, 288 being connected at their Jopposite ends to a valvecas- 5 ing 202 in which there is valve mechanism, here- I inafterdescribed, movable by the .operator to conrtrol the flow of fluid to andfrom either one of the cylinders |34, |98 andthus to control thedirection of swinging movement of the jack. Form imparting to theleveling roll 24 its tipping movementslaterallyof the shoe there isprovided a liiud operated 'member .284' (Fig. 3) having formed thereonrack teeth 208 engaged by the j teeth of at segment gear. 288 fast toa-laterally 55 extending shaft 2|! supported by suitable b earingsformed in a bracket 2|| which is supported by the laterally attendingshaft |88 and the cross-baril". Secured to the outer end o f the shaft2|8'is a lever 2| 2 connected by-an adJust- 60 f able link 2|4 (Fig. 1)to a laterally extending arm 2|8 o n a roll carrier 2|8 that is mountedfor .tip-v ping movements laterally of the machine about the axis of aforwardly and rearwardly extending shaft 228 supported in bearings atthe top of the 85 frame 28. The member 284 -ha's fast to its oppositeends pistons 222, 224 (Fig. 3) sl'idably mounted in cylinders 228, 228supported by the bracket 2| and connected respectively at their lowerand upper end'x by pipes 288, 232 to a valve casing 7o` l 234 in whichthere is valve 'mechanism also mov- -able by the .operator to controlthe flow of 'iuid Vto one or the other of the cylinders 228, 228 andthus to control the direction of tipping movement imparted to thecarrier 2|8 and the leveling roll 75 v ously operating gear pump 236(Fig. 4) which is connected by gears 235, 231.to a shaft 239 on theouter end of which isfastened a pulley 288 connected by a belt (notshown) to any convenient source of power, such, for example, as anelectric motor (not herein shown). drawn from a reservoir 240 in thelower portion of the frame 20 and is forced by the pump through a supplypipe 242, a valve casing 246 in which there is itted to slide novelvalve'mechanism, hereinafter described, for controlling the pressure ofthe operating iiuid,l and a pipe 248 to the valve casings 202 and 284.

The valve casing v202 (Fig. is provided with ports250, 252 communicatingrespectively with the pipes |98 and 200 and intermediate between theseports with a third port 254 communicating with the pipe 240. The casing202 is bored toV receive@l sleeve 256 and is closed at its lower end bya cap 258 secured by screws 260 to the casing and atits upper end by acap 262 secured by screws 263 to [the casing, the caps 258, 262 havingcircular projections thereonI tting the bore in the casing and engagingthe top and bottom.

faces of the sleeve 256. ,The sleeve' 256 is provided with ports 26.4,266 opposite the ports 260, 262 -in the casing and with a-port 260opposite the port 258, the ports in the sleeve 256 each compris# ing-anannular groove 'and holes connecting the annular groove and the interiorof the sleeve.

Fitted to slide within the sleeve 2501s' a hollow valve member 210having formed on its opposite end portions flanges which act normally toclose the ports 260, 265 in the 4sleeve and having its intermediateportionv reduced in thickness to 'form with the sleeve 256 an annularhamber 212 communicating through the ports 268 and` 2515 with the pipe248.

The valve member 210 is controlled manually by a hand lever 21d (Figs.9- and l0) which is pivoted at 216 to a .boss 211 on the frame and 'isconnected by a link 218 to the downwardly extending arm 280 of abell-crank lever 282 pivoted Aat 284.to the frame 28 (Fig. 15). Thelever 282 ris provided with a forwardly extending arm 286 connected byupwardly extending links 288 to. fa. lever 290 that is pivoted at oneend to the head 292 of arod 294 and ait the other endis connected-bydownwardly extending links 296 (Fig. 9) to a vertically movable slide298 having formed thereon rackgteeth 800 meshing with the teeth of asmall pinion 302 fast to the shaft |88. The cap piece 262 secured .tothe upper end of the valve casing 202 is bored Ito receive the rod 29d,the lower end of which is held in engagement witha cross-bar 808 (Fig.15) by a relatively downwardly 218 and is connected at .its lower end toa similar cross-bar 308, the bars 300,- 308 engaging res'peotively thetop and bottom faces of the valve member 210. The parts are so arrangedthat when the operator swings the hand lever'214 rearwardly thevlve 210ismoved downwardly to open the ports 264, 250 to permit the pressureiiuid to ow fromthe chamber 212 through the pipe |98 to fthecylinder-|9412) cause a rearward swinging movement to be imparted to thelack 22. Similarly, when the operator swings the Vhand lever in theopposite direction,- thevalve 210; is

raised to open the ports 26s, 252 and thus to.

cause the jack to be swung forwardly. When The num 1s` The spring 386,which at its'` upvper end Vis `connected tothe rod 298, extends throughthe hollow valve member4 the operating fluid is admitted to either oneof the `exhaust of the iiuid from the other cylinder -to thereservoir240, theuid exhausting from.

the pipe 2 08- through the ports 252, 266 and the hollow valve member210 into a pipe 3|0 extending downwardly from the cap piece 258 into thereservoir 240, and fromthe pipe |98 through the ports 250, 284 into theinterior of the 'sl`eeve 256 and thence through the pipe 3|0 rto thereservoir. v

j" By reference to Fig. 9-it will be seen that, as the arm |64 ,isswung. do wardly toimpart `rearward swinging movemen to the jack 22v inresponse to upward'movement 0f the member |80, the slide 298 is moveddownwardly by reason of its connection with the shaft |86 through therack teeth 300 and the pinion 302. As the slide 288 is thus movedittends to swing the lever 290 about its pivotal connection to the links288 in the direction to raise the valve 21|t1toclose the ports 264, 250and thus' to stopthe rearward swinging movement of the jack, unless theoperator is at thesame time moving the hand lever 214 rearwardly tocounteract this tendency to close the ports. Similarly, upward movementof the slide 298 in-response to downward movementA of the member |80tends to swingl the lever 290 ment of the `iaclrat will. Thus theleveling roll may be caused to operate progressively along4 the forepartand shank portions of the shoe bot` tom, and its operation on anyportion of the forepart or shank may be repeated as many times asdesired, the jack being brought almost instantly to a stopwith the rollat any desired point merely by stopping the movement of the hand lever.

It will be evidentalso that the jack maybe swung at different rates ofspeed, depending upon how widely the ports 264, -266 -are opened, andthis will depend, of course, upon the speed of 'movement of the handlever214. In order to limit the extent ofwhich the valve 210 may 'bemoved to open the port 264, there is provided an adjustable stopillustrated as a collar SI2 (Fig.

'1 5) formed on arodl 3|4 threaded intol the cap piece 262. The rodextends upwardly through an opening in an arm 3|6 formed on Vthe head292, and threaded onthe upperz end of the rod are a nut and lock nut3|8. The collar 3|2 limits downward movement of the valvev 210 to open'the port 25a, and .the nut and 10er nut als limitsl'acceleration inthespeed of movement of the hand lever 214 in either direction,engagement of the arm 3|,6 withI one or the other of the stops 4willthereafter retard' further movement'ofthe hand lever.

in thedirection to move the valve 210 down-- sure by a Valve in thecasing 246 whiclris held open by the pressure viiuid against theresistance 'of' a spring to `permit the excess iluid to return to thereservoir 246 through ports 326 in the casing (Figs. 4 and 1 6). Thevalve comprises a cylindrical member 322 having ahead portion 32| anda-body portion 323 that are fitted to slide in bushings 324, 326 in thecasing 246. The lowei 'end of the casing is partially closed by a plate326 secured to the vcasing by screws 323,' and above the bushing 324there is mounted in the casing a sleeve 336, the lower end of whichengages the bushing-324 and the upper end oi whichv is anged to engagethe top face of the casing, a set screw 332 being provided for holding`the sleeve against endwise movement in the casing. Fitted to slide inthe sleeve 336 is a plunger 334 provided with a central opening for arod 336 thatextends downwardly and is threaded into the valve member322. The valve member 322 is counterbored to receive a spring 336 thatsurrounds the rod 336 and bears at its upper end against a shoulder 346on the plunger 334.. Thel casing 246 (Fig. 6) is provided with ports342, v344 that communicate respectively with the pipes 242 and 246,-andthe bushings 324,l 326 opposite these ports are recessed to provide anannular chamber 346 (Fig. 16) through which the pressure fluid may ilowfrom thepipe 242 to the pipe As shown, the head and body portions of theY valve member 322 are of diierent diameters, the head portion .32|being itted to slide inthe bushing 324 and the reduced body portion 323being fitted to slide in the bushing 326. 'There is' formed around thebody portion of the valve by the bushings 324, 326, and the casing 246an annular chamber 346 that communicates with the chamber 346 throughholes.341 in the bushings 324, 326 (Fig. 16). The head and body portionsof the valve 322 are provided with a. plurality of ports or notches 356,and extending downwardly from the body portion is a stem 352 on thelower end of which is formed a circular flange or disk 354 tted to slidein the bushing `326. The .disk 354 has its bottom face concaved, andformed inthe plate 326 is a small central opening 356. The spring 336tends to move -the valve 322 downwardly to carry the disk 354 toward theplate 326 but is arranged to yield inv response to the pressure of theiluid on a shoulder 356 on the valve to permit upward movement of thevalve into the position shown in Fig. 16, which is its normal position,with the ports 356 permitting escape of the excess uid into thereservoir 246 through ports 366 in the bushings .operator to bring thetoe end .0f a shoe on the 'jack under the leveling roll 24. Fast on thetoe post 26 of the jack is a downwardly extendingarm'362 (Figs. 9 and1Q) engaging a roll' 364 carried by an upwardly extending arm 366 (Figs.10 and 11) fast ona laterally extending shaft 366 supported by the frame26.

Fast to the sliaft'366 is a second arm-316 to the The tension of thespring 336 When the machine is initially at rest, the fluid. ismaintained under a predetermined low presupper end of which is-connecteda rearwardly extending rod 312 horizontally movable in bearings in theframe 26. Surrounding the rod 312 (Figs. 3 and 9) between an adjustablenut and lock nut 314 threaded on the rod and a ilxed stop 316 on theframe 26 is Aa relatively heat? expansion spring 316 that tends to movethe rod4 forwardly and to hold the roll 364 in engagement with the arm362. Threaded adjustafbiy into the upper end oi' the plunger 334 (Fig.4) is a rod 366 held in adjusted position by a nut and lock nut 362 onthe rod engagingthe upper en d face of the plunger 334, and pivotallyconnected to the rod 366 is one link 364 of a toggle the other link 366of which (Fig. 9)- is fast to a rock shaft 366 supported by a bracket336 secured by screws 332 to the brackets |61 and 2H. Fast to theopposite end portion of the rock shaft 366 (Fig. is a downwardlyextending arm 334 in the lower end oi which is vformed a bearing for theshank portion of a block 33,6 that is recessed to straddle a bushing 336which is fast on the rod 312 and is provided with a head 336. Slidablymounted on the rod 312 is a bshing466, the head 462 o'f which is held inengagement with the end of the bushing 336 by a spring 464 thatsurrounds the bushing 466 and the rod 312 and bears at its opposite endagainst a collar 466 fast to the rod 312. When the parts are in'theirinitial starting positions, the toggle links 364,' 366 are in thepositions shown in Fig. 4 with the block 336 in engagement with the head462 of the bushing 466 and'with an adjustable stop,

illustrated as a screw 466 carried by the link 366, in engagement with astop face 4I67on the bracket 336. As the rod 312 is moved Aforwardly bythex'spring 316 in response to rearward swinging movement of the jack 22to-carry the toe end of the shoe toward the leveling roll .24, the.spring- 464 acts on the bushing 466 and the block 366 to swing thetoggle links 664, 366 into substantially parallel relation, with anadjustable stop, illustrated. as a screw 4I2 carried by the link 366 inengagement with a stop face 4|4 on the bracket 336. As the toggle linksare thus swung, they act through the rod 366 to move the plunger-334downwardly further to compress-the spring 336 which tends to move thevalve 322 downwardly intoV a position 'to prevent escape of the fluidthrough the ports 366, 326 to the reservoir.

vWhen the valve 322 is thus moved, iiuid pressure builds up in the pipes242 and 246 and, when sufficient to overcome the increased resistance ofthe spring 336, moves the valve 322 again into the position shown inFigs. 4 and 16 to permit escape of thevexcess iluid through the ports366, 326. It will be understood that the resistance of the spring k336is thus increased by the greater power to be applied vto the pistonsL36, |32 to .swing the shoe support when the leveling roll 24 isoperating on the shoe. It will tie-un-v derstood also that by relativeadjustment of the plunger 334 and rod 366 tension oi' the spring 336 maybe varied to permit escape of the iluid under any desired predeterminedpressure.l Athe 'straightening of the toggle linksg364, 366 to causevalve thus-controlling the pressure "ofthe, operating iluid suppliedfbythe. pump V236. Y

. The machine hereinv shown is so constructed that the leveling m11 24is maintained initially 7 in a position lower than that which itoccupies inoperating upon the shoe` and is lifted at a.'predetermined'time in theflrstrearward swing-` ing movement of the jackto. prevent interference between the roll and the. toe end of the sole,thus peripheral groove 492 formed in the upper end insuring against anydamage` to the sole or undue bending of its margin at the toe end bycontact of the roll with its edge. The roll is mounted for turningmovement on a rod 416 (Fig. 2) in a holder 418, springs 420 beingprovided for engaging the opposite end faces of the roll and actingnormally to centralize' the roll lengthwise of the rod whilepermittingit to move in one direction or the other along the rod forbetter accommodation to the shapes of different portions of the` shoebottom. The holder 418 is plvotally connected at 420 (Fig. 1) to thecarrier 218 and has a rearwardly extending arm 422 connected .by a shortlink 424 to the rearwardly extending arm 426 of la bell-crank lever 428fulcrumed at 430 to the carrier 210. The bellcrank lever 428 has a pairof downwardly extending arms 432 carrying trunnions 434 extending into acircumferential groove. 436 formed ina bushing 438 that is slidablymounted on the shaft 220. Pivotally mounted on a laterally' extendingshaft 440 supported by suitable bearings in the frame 20 vis an upwardlyextending arm 442 the upper portion of which is forked to straddle thebushingr438, the arms .of the forked portion carrying trunnions 444extending into a circumferential groove 446 in the bushing 438. Mountedon the shaft 440 is a downwardly extending yoke member 448 and connectedto this member by a threaded rod 450 is a yoke-shaped member 452 betweenthe arms of which at their lower ends there is pivoted a lever 454. Thelever 454 has oppositely extending armsl of equal lengths to the ends of-whlch are pivotally connected abutments 456, 458 for relatively heavyexpansion springs 4611, 462. At its upper end, the

spring 462 bears against an abutment 464 pivoted at 466 to the frame 20.The spring 460 at its upper endI engages an abutment 468 pivotallyconnected to an arm. 410 integral with the arm 442. The abutments 456,458 are each provided with an upwardly .extending reduced portion 411 towhich there issecured a rod 413. The rods 413 extend upwardly intocentral openings formed in'downwardly extending reduced portions 415 onthe abutments 464, 468. It will be evident that the springs 462, 460tend to swing the arms 410-, 442 in a clockwise direction,` as viewedinFig. 1, to move the sleeve 438 rearwardly on the shaft 220 and toimpart downward swinging movement to the holder 418 to lower theleveling roll 24, the initial position of which is determined byengagement of the arm 55 442 with an adjustable stop illustrated as ascrew 412 threaded in the frame 20, a lock nut 414 being provided forholding the screw in adjusted position. The rod 450 connecting theyokeshaped members 448, 452 has right and lefthand 60 threads formed onthe opposite end portions so that by rotation of the rod the member 452may be moved relatively to the member 448 to vary the tension of thesprings 460, 462. Formed on' the rod 450 is a central collar 416provided with 65 a plurality of holes into any one of which the 70 link480 to one end of a lever 482 pivoted intermediate between its ends to abracket 484 secured by'screws 4,86 to the -frame 20. The lever 482 'hasits opposite end portion forked to strad die a plunger 488, the arms ofltheforked por- 75 tion carrying trunnions 490 that extend into a of theplunger y488 (Fig. 8). The plunger is fitted to slide in a cap piece 404and has on its opposite end a T-shaped projection 496 extending into asimilarly shaped slot 498 in a piston 500 that is tted to slide in acylinder 502. 'I hev cap piece 494 is counterbored to receive the upperend of the cylinder 502 and is secured by screws 504 to a bracket 506with the cylinder extending into a bore 508 in the bracket and engagingat its lower end a spacer 510 provided with a central opening 512through which the cylinder communicates with a chamber 514 in thebracket 506. Fitted to slide in the chamber 514 is a piston 516. Thepiston 516 is counterbored to receive agspring 518 that bears at itsupper end against the spacer 510 and acts normally to hold the piston516 in engagement with a pin 520 projecting upwardly from a plate 522that is secured to the bracket 506 by screws 524 to close the lower endof the chamber 514. The bracket 506 is provided with a bore 526 toreceive a cylindrical valve 528 which is held normally in the positionshown in Fig. 8 to permit pressure fluid to ow from the casing 246through a pipe 530 past the valve 528 and through a port 1532 intothechamber 514. At a predetermined time in rthe rearward swinging movementof the jack 22, as more particularly hereinafter described, the valve528 is moved downwardly into a position to interrupt the flow ofpressure fluid to the chamber 514 and to open a-port 534 connecting thecylinder 502 below the piston 500 through. the bore 526 with a smallreservoir 536 for the fluid above the valve 528., As shown, the bracket506 is recessed to provide annular chambers 538 and 540 connected by aport 541 through which the pressure fluid flows. from the pipe 530 tothe port 532. When thevalve is moved downwardly it closes the port 541,thereby disconnecting the chambers 538 and 540, the fluid being free,however, to flow from the chamber 514 through the port 532 into thechamber 540 and ,thence upwardly in the bore 526 and through.

openings 542 in the valve 52'8 into the reservoir 536 in response todownward movement of the piston `516, and from the cylinder 502 throughvthe port 534 and the bore 526 into the reservoirl reservoir 240. v

At its upper end the reservoir 536 is closed by aplate 546 securedto the.bracket 506 by screws 548. The plate 546 is bored to receive a rod 550on` the lower end of which is formed a T-` shaped tongue 552 extendinginto a similarly shaped groove in the -valve 528. At its upper end therod 550 is connected by short links 551 (Fig. 8) to a lever 554pivotally connected at 556 to' the cap piece 494. 'Ihe lever 554 has anupwardly extending arm 558 (Fig. 4) carrying an eye'bolt 560 to which isconnected one end of a spring 562, the` other. end of which is connectedto a pin 564 projecting upwardly from. the bracket 390. The spring 562tends to swing the lever 554 in a direction to impart upward A movementto the rod 550 to move the valve 528 into the position shown in Fig. 8,the movement of the lever in this direction under the influence of thespring being limited by the ,engagement of a projection 565 formed onthe head of the rod 550 with an adjustable stop, illustrated as a screw568 Acarried by a projection 510 onthe Aspring 518. and the springs 460,462.

pressure of the operating fluid, however, is increased through thestraightening of the toggle links 384, 306 it moves the piston 516upwardly and through the fluid trapped between'the pist0n 516-and thebottom of the piston 500 also moves the piston 500 .until the piston 514engages the spacer 512. As the piston 500 is thus moved upwardly in thecylinder 502 it acts through the lever 482 and the rod 480 to swing thearms 418, 442 in'a 'counterclockwise direction, as lviewed in Fig. l, toraise the leveling roll to a level higher than the bottom of the shoe.As the toe end of the shoe is moved under the leveling roll, anadjustable collar 514 (Fig. 4) fast on the rod 312 acts by engagementwith a block 516 pivotally connected to a downwardly extending arm 518on the lever 554 to swing the lever against the resistanceof the spring562 in` a direction to move the valve into position to close the port541 and toA open the port 534 to the reservoir 536. With the port 54|closed and the port 534 open, the arm 442 is released to the action ofthe springs 460, 462 which swing the' arm reversely in the direction topress the leveling roll yieldingly yagainst the bottom of the shoe. Thepiston 516 is provided With a small central opening 519 through whichthe pressure u'id may flow from'the chamber 514 into the cylinder 502 toinsure that a column of iluid will be maintained at all times betweenthe pis'- ton 516 and the bottom of the piston 500.

In order to prevent too sudden a release of the leveling roll 24 totheaction of the springs 460,

462, suchV as might tend to cause the roll 'to impart a hammer blow'tothe bottom of the shoe, there is provided a fluid check for retardingthe movement of the lever 554 in the direction to move the valve 5284into position to close the port 54| and thus to disconnect the sourceof pressure fluid from the cylinder 514 and to open the port 534.Pivotally connected to the lever 554 (Fig. 4) by short links 580 is asmall piston 582 fitted .to slide in a bore 5,84 (Fig. 7) in the bracket506, the bore being connected to the reservoir 536 through a smallcentral opening 586 and a laterally extending passage 588 the outer endof which is closed by a screw plug 590. At its lower end the bore 5114is formed to provide a seat for a ball valve592 that may be displacedmore or less relatively to its seat by an adjustable screw 594 threadedinto the bracket 506 and held in adjusted position by a. lock nut 596.Preferably the screw 594 is so adjusted that the ball valve 592 isdisplaced slightly relatively to its seat to provide a comparativelysmall opening for the exhaust of the iluid from the bore 584 to thereservoir 536 as the piston 582 is moved downwardly in the bore inresponse to downward swinging movement of the lever 554 to'move'thevalve 528 into position to close the port 541 and to open the, Yport534. It will be evident that-the uid is permitted to ilow freely fromthe reservoir 536 by the ball valve 592 into the bore 584 Ain responseto upward movement of the piston 582 andthat, as the piston movesdownwardly in the bore, the :duid tends to press the ball valve againstits seat,

the screw 594, however, holding the ball valve 'slow exhaust of thefluid from the bore.

As the' displaced suiilciently to permit a comparatively This tends toretard the downward swinging movement of the lever 554 to move the valve528 into position to disconnect the source `of pressure fluid from thecylinder 514 and to open the port 534. As a result, the uid is exhaustedat a comparativelyslowratefromthe cylinder 602, thus retarding downwardmovement of the piston 500 and the rearward swinging movement of thelever 442 to move the leveling roll 24 downwardly into engagement withthe bottom of the shoe. It will be understood that with'the valve 528 inposition to close the port 541 and to open the port 534 the y levelingroll is released fully to the action of that s the jack is swungrearwardly and for-v wardly beneath the leveling roll 24 the heightwiseposition of the leveling roll is varied in accordance with variations inthe lengthwise curvature of the shoe bottom. Any variation in theheighty `A536 supplying or receiving fluid from the cylinder 502 tomaintain at all times a column of uid between the two pistons 500, 516.Accordingly each time the valve 528 is moved into the position shown inFig. 8 to close the port 534 and to open the port 541, the piston 516 ismoved upwardly and through the trapped iluid between it and the bottomof the piston 500 moves the piston 500 upwardly to lift the levelingroll from contact with the bottom of the shoe regardless of theheightwise position of the leveling roll.

The valve mechanism in the casing 234 (Fig. 3) for controlling the ilowof pressure flu-id'to one or the other of the cylinders 226, 228 isidentical in construction `with that previously described in the casing202 for controlling the ow of the pressure fluid to one or the other ofthe 602, each port in the sleeve 604 comprising an annular groove andholes connecting each groove with the interior of the sleeve. A hollowvalve member 612 tted to slide in the sleeve 604 .has its opposite endportions flanged to close the ports 606, 608 and its intermediateportion reduced in thickness to form an annular chamber 614communicating through the ports 610, 602 with the pipe 248. 'I'he valvemember 612 is controlled manually by a hand lever 616 which is pivotallyconnected at 618 to av boss 620 on the frame 20 (Fig. l). Pivotallyconnected to the hand lever 616 is a link 622 the rear endA portionofwhich is pivotally connected to the lower end of a downwardly extendingarm 624 (Fig. 3) of a bell crank lever fulcrumed at 626 to the frame 20.'I'he bell crank lever has a forwardly extending arm 620 connected byshort upwardlyA extending links 630 r to a lever 632 one end of which ispivotally connected tothe head 634 of a rod 636 that extends downwardlythrough a bore in a cap piece S38 secured to the upper end of the casing234 by screws 640. At its opposite end, the lever 632 is connected tothe upper end of a link 642 the lower end of which is pivotallyconnectedv to a forwardly extending arm S44 on the lever 2 I 2.Similarlyto the rod 294 of the valve casing 202, the rod 63S is held bya relatively stiff spring S46 in engagement with a cross-bar 648 thatengages the top face of the valve member SI2, the spring S46 extendingdownwardly through vthe hollow valve member SI2 and being connected atits lower end to a crossbar 650 engaging the bottom face of the valvemember.A A cap piece S52 connected to the casing 234 by screws S54 forclosing the lower end of the casing has extending downwardly therefrom apipe S56 toprovide a passage for the exhaust of the fluid from one orthe other of the cylinders 226, 228 through the vports controlled by thevalve member SI2 and the interior of the casing 234 to the reservoir248. From the above description it will be evident that the operator mayby rearward movement of the hand lever SIS move the valve member SI2downwardly in the casing 234 to open the ports S06, 598 and therebyadmit pressure fluid 'into the cylinder 22S to cause upward movement tobe imparted to the member 204 and thus to tip the leveling roll in acounterclockwise direction, .as viewed in Fig. 2, about the axis of theshaft 220; or, by forward movement of the hand lever 8IS, he may movethe valve member SI2 up- 'wardly to open the ports S08, 680 and therebyadmit pressure uid into the cylinder 228 to cause downward movement tobe imparted to the member 204 to tip the leveling roll in a clockwisedirection about the axis of the shaft 220. As previously pointed out,the member 204 is connected to the roll carrier 2I8 through the seg- 40ment gear 288, rock shaft 2I0, lever y2l2, and adjustable link 2li, and,as the lever 2I2 is swung in either direction by the movement of themember 204 it tends to swing the lever S32 about its pivotalconnection-to thelinks S38 in a direction 45 to return the valve memberSI2 to the position shown 'in Fig. 3 and thus to stop the tippingmovement of the roll 28 unless the operator is at the same time movingthe hand lever SIS in a direction to counteract this tendency to closethe, 50 valve SI2. It will thus be evident that by means vof the handlever lSIS the operator may cause the roll 24 to be tipped laterally ofthe shoe in either direction at any desired inclination in operating on`any portion of the shoe bottom. It will also 55 be evident that the rollmay be tipped at different `rates of speed depending upon how fast thehand lever SIS is swung by the operator to open the ports 598, 60|).y Inorder to limit the extent to which the valve SI2 may be moved to openeither 80 the port 598 or the port S00 and thus to determine the maximumspeed at whichthe roll may be tipped in either., direction, there isthreaded into the cap piece 638 an adjustable rod S58 having formedthereon a collar 660 which limits 65 downward movement of the valve SI2to open the port 598 by engagement with an arm 662 on the head S34Lofthe rod 63S. The lrod S58 extends upwardly through an opening in theprojection 662, and threaded on the upper end of the rod 70 is a nut andlock nut S64 that limits upward movement of the valve SI2 to open theport S00. If the rate of speed of the hand lever S I 6 is acceleratedfast-enough in Aeither direction to move the arm 662 into engagementwithone or the 75 otherof the stops S60, S54, the roll will be tipped at themaximum rate of speed. It will be evident also that in the event of anabnormal acceleration in the speed of movement of the hand lever ineither direction, engagement of the arm S62 with one or the other ofsaid stops will retard further movement 4of the hand lever.

Conveniently, the hand lever SIS is so formed that it may be adjustedheightwise and lengthwise of the machine within limits to suit theconvenience of the operator. As shown, the. hand `lever comprises a rodS66 (Fig. l) on the upper end of which is a knob 668 arranged to begrasped by the hand of the operator. The rod is adjust- Iably movable ina casting 610 pivoted at SI8 to the boss S20 so that its effectivelength may be varied, a set screw S12 being provided for holding it inadjusted position (Fig. 12). The casting S18 is secured by. bolts S14'to a'plate S16 also fulcrumedv at 6 I 8 to thevboss 620 and to whichthe link S22 is pivotally connected. The" body portions of the boltsextend through arcuate slots S18 in the plate 61S concentricWith theaxis SI8 so that upon loosening the bolts S14 the castingl 610 and therod SSS may be adjusted relatively to the plate S16 to vary the positionof the knob S68 forwardly or rearwardly in the/machine, as

' desired. When the machine is initially at rest with the jack 22 initsforwardly inclined position (Fig. 1),the valve member SI2 isin thepo- `sition shown 'in Fig. 3 with the leveling roll 24 in asubstantially horizontal position. In order to prevent any accidentalopening of the valve member SI2, ,such as might be caused by forwardswinging movement of the hand lever SIS due to the weight of parts,there is formed on the plate S16 a projection S80 arranged to engage aprojection 682 formed on a collar S83 adjustably secured by screws S85to the rockshaft 28. It will be understood that, as the jack 22 is swungrearwardly to carry the toe end ofthe shoe into position beneath theleveling roll 24, the. rocking of the shaft 28 moves the projection S82relatively to the projection S80 so that thereafter the hand lever SISmay be swung either forwardly or rearwardly to cause theleveling roll tobe tipped as desired.

From the foregoing description, 'it will. be evident that the operatorby movement of the hand y i the roll 24 exactly as if he were operatingthe machine by hand, the speed of movement of the hand levers beingpreferably slow enough to permit the operator to stop the swingingmovement ofthe jack or the tipping movement of the roll at any desiredpoint merely by stopping the movement of the appropriate hand lever. Aspreviously pointed out, as the jack 22 receives its first rearwardswinging movement to carry the toe end of the shoe under the levelingroll 24, the rod 312 is moved forwardly by its operating spring 318 tostraighten the toggle links 384,A 38S and -thus to increase the tension.of the spring 338 of the pressure controlling valve, so that theoperating uid is thereafter supplied-under the desired maximumvpressure. -As the pressure of the operating fluid is `thus increased thepistons 5I6 and 580 are moved upwardly and swing the arm 422 'againstthe resistance of the springs ,460, 462 in a direction to elevate theleveling roll.

As the toe end of theshoe is moved into position block 514 on theforwardly moving rod 312 with the block 516 vpivotally connected to thearm 518 of the lever 554. This movement of the lever 554 acts to movethe valve 528 into position to close the port 54| and to open the port534, thus permitting the springs 460, 462 to swing the lever 442reversely Ato lower the leveling roll into engagement with the shoebottom. It will be understood that by adjustment of the block 514 on therod 312 the vtime in the rearward swinging movement of the jack 22 whenthe leveling roll .is thus released t0 the action of its operatingsprings 460, 462 may belvaried to cause the roll to engage the toe endof the sole at any desired point, the block 514 being preferably soadjusted that the roll will move downwardly into engagement with thesole at its toe end just rearwardly of its projecting margin. Theforward movement of the rod 312 is limited by the engagement of a pin684 (Fig. 9) carried by a rearwardly extending arm 686 adjustablysecured to the rock shaft 368 with anadjustable rod 688 at the upper endof a lengthwise slot 690 in the rod, the

ably mounted in a casting 698 fulcrumed at 216 to the boss 211, the rodhaving formed on its upper end a knob (not shown) arranged to be graspedby the hand of the operator.

crumed at 216 to the boss 211 is a plate 100 provided with arcuate slots102 concentric with the axis 216 'and through which extend the bodyportions of bolts 104 carried by the casting 698, the casting 698 andthe plate 100 being thus relatively adjustable to vary the position ofthe rod 696 lengthwise of the machine. It will be understood that thelink 218 is pivotally connected to the plate 10,0 of the hand lever.Formed on the j plate 100 is a downwardly extending arm 106 to whichthere is pivotally connected a bell crank lever,108 between one arm 1I0of which and a. pin 1|2 projecting from the plate 100 there extends aspring 1I4 that tends to swing the bell vcrank lever in a direction tohold its second arm 5 5 1l.6 -in engagement with a fixed stop,illustrated arm 1I0 of the bell crank lever carries a pin 120 arrangedto extend into a lengthwise slot 122 formed in alink 124pivotallyconnected at its. 30 upper end to a collar 126 adjustably secured to therod 696. The casting 698 is counterbored to receive a spring 12,8 thatsurrounds the rod 696 and bears at its upper end against the collar126,l

the spring thus acting to hold the collar in engage- `ment with the headof a. pin 130 carried by the casting 698. 1 The construction is suchthat as the Vhand lever214 is swung rearwardly to cause rearwardswinging movement to be imparted'to the jack 22 from the position shownin Fig. 10 to 70 carry thetoe ofthe shoe under the leveling roll 24, thebellcrank lever 108 is moved bodllyabout the axis 216- and is also swungby the spring 1| 4 in a direction to .move the pin 120 into engagementwith the link 124 at the upper endl of the v' slot 122 with the pin 1l94engaging the yarm 1 I6 hand lever 214 is locked against forwardswinging 10, the hand lever 214 comprises-a rod 696 slid-- as a pin 1I8projecting from the frame 20. 'I'he ments of the hand lever so that eachtime in its forward swinging movement the arm 1|6 will, by.

engagement with the stop 1I8, limit the forward swinging movement of thejack when the extreme toe end of the sole has been moved into thedesired relation to the leveling roll. The collar 126 is provided with asplit bearing for the rod 696, the two halves of the split bearing beingconnected together by a indin'g screw 134tightening of which draws thetwo halves of the'split bearing toward each other to clamp the collar inadjusted position on the rod. It will be readily seen that by looseningthe binding screw the rod 696 may be adjusted relatively to the casting698 in the directionA of its length to vary its heightwise position tosuit the convenience of the operator. At the end of the levelingoperation the operator may by merely pressing downwardly on the rod 696cause the link 124 by-,engagement with the pin to swing the bell cranklever,108 against the resistance of the spring 1|4 in a direction tomove the arm H6 out of engagement with the stop A1I8, and with the rodthus depressed the hand lever may be swung forwardly to cause forwardVswinging movement of the jack to its initial starting position.

The illustrated machine is further lprovided with automatic means forcontrolling the valve 210 to prevent rearward movement of the shoesupport beyond a position in which the roll is in engagement with -thebottom of the shoe substantially at the junction of -its shank and heelend portions. For this purpose, there is loosely mounted on the rockshaft 28 an arm 136 (Fig. 10) adjustable relatively to the shaft 28 bymeans of a threaded'rod 138 rotatably mounted in a bearing pivotallyconnected to the heel post 30. The rod 138 is held against endwisemovement relatively to the bearing 140 by a hand wheel 142 fast to theouter end of the rod and engaging one end face of the bearing 140 and a.collar 144 fast to the rod and engaging the opposite end face of thebearing. 'I'he rod 138 extends through a block 146 pivotally connected,to -a projection 148 on the arm 136, and pinned to the rear end of therod is a collar 150. Loosely journaled on the rock shaft 368 is a bellcrank lever 152 (Fig.

v1 1) having an upwardly extending arm 154 carrying at its upper end aroll 156 and a rearwardly extending arm 158 (Fig. 10) connected by anadjustable rod 160 to the forward end of an arm 162 (Fig. 15) fulcrumedat'284 to the frame 20 and connected -by an upwardly'extending link 164to the head 292 of the rod 294. The roll 156 lies in the path ofmovement of the lower` end of the arm 136 so that in the rearwardmovement of the jack 22, when the roll is engaged by the arm, the bellcrank lever 152 is swung, in a counterclockwise direction, as viewed inFig.' 9.

-As the bell crank lever 162 isthus swung it acts Vand stopping therearward swinging movement of the jack. It will Abe evident that byaddustment of the arm 136 about the shaft 28 by means of the threadedrod 138 the time in the rearward movement of the jack, when the roll 156vis engaged by the arm, may be variedto vary the limit of rearwardswinging movement of the jack, the arm 136 preferably being so adjustedthat the roll will -be engaged by the arm substantially at the timedifferent lengths movement of thev heel post toward or from the toe post26 to position the ends of the toes of shoes of different lengths. insubstantially the same location will vary the position of the arm 136relatively to the roll 156 in accordance with variations in the lengthsof different shoes. Accordingly, the extent of rearward swingingmovement of the jack will be varied in operating upon shoes of differentlengths, the jack being brought to a stop by the actiony of the arm 136on the lever 152 with the leveling roll in substantialy the-samerelation to shoes of different lengths. y

As previously pointed out, forward movement of the rod 312 is limited byengagement of the pin 684 in the arm 686 with the rod 688 vat the upperend of the slot' 698 in the rod. The rod 688 is pivotally connected atits lower end to the treadle 692 which is upheld by a spring 166 (Fig.9) with an adjustable stop, illustrated as a screw 168, in engagementwith the frame 28. It will be evident that at any time in the operationofA the machine the operator may by depressing the treadle 692 move therod 312 rearwardly far enough to release the lever 554 to the action ofthe spring 562 to cause the valve 528 to be opened and the port 534closed. As the valve 528 is thus moved to open position, the pressurefluid acts to raise the pistons l6, 588 to cause the leveling roll to bemoved upwardly out of engagement with the bottom of the shoe. If thesole is provided with a clearly defined ball line, the operator may thuscause the roll to be lifted each time in the swinging movement of thejack when the roll approaches the ball line, or, he may hold theleveling roll upraised so as not to contact with the shoe vuntil someparticular portion on the sole, such, for example, as the shank, is inposition beneath the roll, if it is desired to level the shank portionwithout leveling the forepart. Moreover, in operating on shoes of thecottage shank type, after leveling one side of the shank with the rollin an inclined position, he maylift the rolland placev it in anoppositely inclined position on the other side of the shank withoutengaging the central. ridge of the sole.

Furthermoreif the operator observes any small irregularities in the solesuch as might be caused by the unevenness of the shoe materials betweenthe outsole and the insole, he may disconnect the previously mentionedfluid check for retarding the movement ofthe leveling roll toward ytheshoe, and by depressingand releasing the treadle 682 ay number' of timescause the leveling roll to apply a plurality of hammer blows to the:sole to assist in leveling such irregularities. It

will be understood Lthat to disconnect the fluid check all` the operatorneed do is to adjust the screw 594 far enough to move the ball valve582out of engagement with its seat 'at the lower end of the bore 584.

With the fluid check disconnected each time, the treadle is vraised topermit the rod 312 to move forwardly and to swing the lever 554 inthvdirection to close thevalve 528 the leveling roll will be operated bythe springs 468, 462 to impart a hammer blow to the sole.

In the operation of the machine briey summarized the operator mounts alast and shoe o'n the heel pin 34, moves the heel post relatively to thetoe post position the toe end o-f the shoe in proper relation to the toesupport 32, and then by downward movement of theAhan'd lever 50 locksthe heel post in adjusted position and causes the heel pin to be tippedtoward the toe post to force the toe end of the shoe down on the toesupport. Then by rearward swinging movement of the hand lever 214 theoperator causes the jack 22 to be swung rearwardly to 'bring the` toeend of the shoe under ythe leveling roll 24. As the jack is thus swung,the rod 312 is moved Aforwardly by the spring 318 to swing the togglelinks 384, 386 into substantially parallel relation, thus impartingdownward movement to the plunger 334 further to compress the spring 338.As the spring 338 is thus vcompressedit I pump 236-to the reservoir,thus increasing the` pressure of the operating uid. As the pressure ofthe operating fluid is increased, the pistons 500 and 5l6 are movedupwardly to cause upward swinging movement to be imparted tothe rollholder 4l8 to carry the roll into a position higher than it.occupies inoperating upon a shoe. In the continued forward movement of the rod 312the lever 554 is swung by engagement of the collar 514 on the rod 312with the block 516 carried by the arm 518 of the lever 554 against theresistance of the spring 562 in a direction to move the valve 528 intoposition to close port 54|, and to open the port 534, thus releasing theholder 418 to the action of the springs 460, 462. The rollv isaccordingly swung downwardly to engage the shoe initially upon thebottom face of the toe end of the sole in such a location as to permitproper leveling of the toe portion without imparting any excessivebending to the mar-1 gin of the toe end of the sole. It will beunderstood that by adjustmentof the collar 514 on the rod 312 th'e timeinthe iirst rearward movement of the jack when the leveling roll is thusmoved downwardly into position to engage the the roll irst engages theshoe. It will 4be understood also that the movement of the valve 528into position to close theport 54| and to open the port 534 and thedownward swinging movement of the holder 4|8 is retarded by the iiuidshoe may be varied to vary the location in which check to prevent anypounding action of the 4 abutment 688 on the hand lever' 6I6 into aposition in which it will no longer obstruct forward swinging movementof the hand lever 6I6. 'Thereafter the operator may by movement of thehandlevers 214, 6I6 cause the jack to be swung rearwardly and forwardlybeneath the leveling.

roll and may vary the extent of its swinging movements within the limitsdetermined by engagement of the arm 1l6 with the stop 1I8 and byengagement of the arm'136 with the roll 156. With the leveling roll 24in a horizontal position or tipped at vany desired inclination, the

